America's 60 biggest mansions

Sure, technically the country's truly largest house—the well-documented, high-drama 'Versailles' monster that smears across Windermere, Fla., at 90,000 square feet—has blipped onto the market a few times in the last few years, but the palace has been off the official listings since August 2012, likely because the owners are now trying to wrap construction before selling it off. (Interested parties, word is, can still pay $65M for the property as is.) With Versailles off the table, it seemed a fine idea to round up the nation's other largest estates on the market right now.